Apparatus for the manufacture of glass pipes



(No Model.) 2 Sheets-Sheet 1.

A. TUERPPS.

APPARATUS FOR THE MANUFAGTURE 0F GLASS PIPES. No. 459,490. PatentedSept. 15, 1891.

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A. TUERPFS.

APPARATUS FOR THE MANUFACTURE OF GLASS PIPES. No. 459,490. PatentedSept. 15, 1891.

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Mrs STATES AUGUST TUERFFS, OF FO ATENT OFFICE.

RD CITY, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 459,490, datedSeptember 15, 1891.

Application filed October 21, 1889. Renewed June 30, 1891. Serial No.397,991. (No model.)

To all whom it may concern.-

Be it known that 1, AUGUST TUERFFS, a citizen of the United States,residing at Ford City, in the county of Armstrong and State ofPennsylvania, have invented certain new and useful Improvements inApparatus for the Manufacture of Glass Pipes, of which the following isa specification.

This invention relates to an apparatus for the manufacture of glasspipes; and it has for 1ts object to provide a simple and improvedapparatus of this character embodying mechanism for efficiently formingthe threads upon the sleeve at one end of the pipe and means forpressing the molten glass against the sides of the mold to form apressed pipe.

A further object of the invention is to provide an apparatus of thischaracter possessing advantages in point of inexpensivene'ss,durability, and general efficiency.

In the drawings, Figure 1 is a perspective view of an apparatusembodying my invention. Fig. 2 is a vertical longitudinal sectionalview. Fig. 3 is a top or plan View. Fig. at is a detail perspective viewof the threadforming' sleeve. Fig. 5 is a detail perspective view of apipe as manufactured by the apparatus.

Corresponding parts in the figures are denoted by the same letters ofreference.

Referring to the drawings, A designates the bed of the apparatus,preferably formed of cast-iron and mounted upon suitable standards orsupports a. Upon this bed is disposed a mold B, formed in twocorresponding longitudinal sections, the latter being hinged,preferably, to a standard 0, projecting upwardly from the bed. Thecontour of the inner surface of these sections when closed is designedto conformto the exterior surface of a pipe, and each section isprovided with a handle D D, by which they are opened or closed. Thelower end of the mold is enlarged, as shown at Z), within which isformed the pipe-sleeve, while the upper end of the mold is provided withinterior screw-threads or corrugations d, for the purpose hereinafterset forth.

The bed A is provided with a circular opening E, corresponding to andinclosed by the lower end of the mold. lVithin this opening is fitted aplate F, provided with a central screw-threaded openingf, said openingbeing of larger diameter than the threads or corrugations d. The plate Fis further provided with a flange f at its lower end, which projectsunder and is secured to the bed A.

lVithin the threaded opening of the plate F works acorrespondingly-screw-threaded sleeve G, the latter being adapted to beadjusted within the mold to form interior threads upon the sleeve of thepipe. provided at its lower end with a horizontallydisposed gear-wheelH, which meshes with an elongated pinion h, carried by averticallydisposed shaft 71., mounted in the bed A, an a bearing-plateI.

Upon the shaft h, above the pinion h, is disposed a bevel-gear 71 whichmeshes with a "similar gear 763, carried by a horizontal shaft h mountedin uprights h 71?, projectingfrom the plate I. A crank-handle J ismounted upon the outer end of the shaft h by which motion is imparted tothe gearing. The operation of this mechanism will be obvious. As thecrank-handle is turned in the proper direction motion is imparted to thesleeve G- through the medium of the gearing, adjusting said sleeve intothe mold. The elongated pinion h is of sufficient length to permit theengagement of the gear H at all times.

Upon the bed A is mounted a vertical standard K, extending some distanceabove the mold, and has its upper end bifurcated, forming two divergingcurved arms lo the former of which projects over the center of the mold.The arms k 70 are each provided at its end with a pulley k 10 over whichpasses a rope or chain Z, connected at one end with a core L, working inthe sleeve G and provided at its free end with a weight M.

The operation and advantages of my invention will be readily understoodby those skilled in the art to which it appertains: As the moltenmaterial is fed to the mold through the top the sleeve G is adjusted upinto the mold to press the glass and form a thread thereon. The core isthen moved up as the material is fed to the mold, throwing it againstthe sides of the mold and pressing it in the upward movement of thecore. When the pipe thus formed has been sufficiently cooled, the coreis removed entirely from the mold and the sections of the latter thrownopen and This sleeve Gis the pipe removed. The article N thus produced(see Fig. 5) is provided at its small end with a male screw-thread or aseries of corrugations n and at its other end with an enlarged sleeveor, having an interior thread n of larger diameter than the male threador corrugations at the opposite end of the pipe. Thus when a joint isformed a space is left between the male screw-threads or corrugationsand the female threads, and this space is design ed to be packed withcement, plasterof-paris, or other similar material to form an air-tightjoint. The article, however, forms no part of this application, the sameforming the subject-matter of a separate application filed October-21,1889, Serial No. 327,708.

It will be obvious that while my apparatus is designed more especiallyfor the manufacture of glass pipes it may be employed in the manufactureof pipes of other material with equal efficiency.

I claim as my invention 1. In an apparatus for the manufacture of pipes,the combination, with a mold provided at one end with an enlargedsleeve-forming portion, of an exteriorlythreaded hollow sleeveadjustable within the latter and an adj ustable core Working in saidsleeve, substantially as and for the purpose set forth.

2. In an apparatus for the manufacture of pipes, the combination, with amold comprising the body-forming portion and the sleevel forming portionat one end, of a sleeve ad- 1 j ustable within the latter and of agreater d-iameter than the interior of the body portion, for the purposedescribed, and means for adjusting said sleeve to form interior threadsupon the pipe-sleeve, substantially as and for the purpose set forth.

3. In an apparatus for the manufacture of pipes, the combination, with amold comprising the body portion and an enlarged end portion, of a coreadjustable in said mold, a threaded sleeve surrounding'the core andadjustable in said enlarged end, for the purpose described, said sleevebeing of larger diameter than the interior of the body of the mold, andmeans for adjusting the sleeve, substan:

tially as set forth.

l. In an apparatus for the manufacture of pipes, the combination, withan upright mold mounted on a bed, the latter being provided with athreaded opening surrounded by the mold, said mold being provided withinterior threads or corrugations at its upper end and having an enlargedlower end, and an adjusti able core Working in the mold and suspended bya rope or chain carrying a Weight, a threaded sleeve surrounding saidcore and Working j in the threaded opening in they bed, and means foradjusting said sleeve, substantially as and for the purpose set forth.

, In testimony whereof I affix my signature in presence of twowitnesses.

AUGUST TUERFFS.

WVitnesses:

FRED AYE,

ANDIE FRANZ.

